Microsphaeridiorhynchus ?nucula-Resserella Comm., Steinsfjorden Fmn. (Silurian of Norway)

Where: Norway (68.8° N, 15.0° E: paleocoordinates 12.2° S, 9.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Steinsfjorden Formation, Sheinwoodian (433.4 - 430.5 Ma)

• Base of Steinsfjorden Formation, lower parts of the section. Late Sheinwoodian, or possibly even early Homerian.

• formation-level stratigraphic resolution

Environment/lithology: marine; carbonate

• "The gastropods and linguids are found only in the lagoonal intertidal environment...The comm. is mainly found in BA 1, but may occur down to BA 3 under restrictive conditions."
• "...occurs in different types of carbonate facies; lagoonal intertidal, inter-supratidal flats, and in a restricted subtidal platform with high sed. rates..."

Collection methods: List based on table 22.10, with two samples combined. Table includes abundance data.

Primary reference: B. G. Baarli, H. B. Keilen, and M. E. Johnson. 1999. Silurian communities of the Oslo Region, Norway. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 327-349 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14307: authorized by Michael Foote, entered by Michael Foote on 30.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Not all taxa listed to genus level.
Show authors, comments, and common names
Lingulata
  -
Lingulata indet.
Lingulata indet. Gorjansky and Popov 1985
Lingulid
Rhynchonellata
 Rhynchonellida - Rhynchonellidae
Rhynchonella sp.
Rhynchonella sp. Fischer 1809
sp. B
 Rhynchonellida - Trigonirhynchiidae
Microsphaeridiorhynchus ? nucula
 Orthida - Dalmanellidae
Resserella sp., Resserella canalis
Resserella sp. Bancroft 1928
sp. B
Resserella canalis Sowerby 1839
Bivalvia
 Ostreida - Pterineidae
Pteronitella retroflexa
Gastropoda
 Murchisoniina - Murchisoniidae
"Murchisonia obtusangulata" = Murchisonia obtusangula
"Murchisonia obtusangulata" = Murchisonia obtusangula Lindström 1884 snail
 Euomphalina - Euomphalidae
"Oriostoma discors" = Poleumita discors
"Oriostoma discors" = Poleumita discors Sowerby 1814 snail
Ostracoda
 Leperditicopida - Leperditiidae
Herrmannina sp.
Herrmannina sp. Kegel 1933 ostracod